京津风沙源治理工程是北京市生态建设的重点工程,涉及昌平、门头沟、怀柔、平谷、密云、延庆和房山等山区县,面积约107万公顷,涉及人口220万。工程实施的主要目的是增加林草植被,防沙治沙,涵养水源,提高区域生态环境质量,为山区农民增收致富打好基础。 Beijing-Tianjin Wind and Sand Source Control Project is a key project of ecological construction in Beijing and covers mountainous counties of Changping, Mentougou, Huairou, Pinggu, Miyun, Yanqing and Fangshan with an area of ​​about 1.07 million hectares and a population of 2.2 million. The main purpose of project implementation is to increase the vegetation of forest and grassland, prevent and control desertification, conserve water sources, improve the quality of regional ecological environment, and lay the foundation for peasants in mountainous areas to increase their income and get rich.